(A) (B) (D) Which of the following is the most suitable Questions 27 to 31 concern the lollowing organic compounds (A) THOOCCHCHCOOH (C) CllEN',CI 18. vessel in which to perfom the experiment? (A) (B) (C) Conical tlask Evaporating basin Glass beaker Polythene flask (B) CCHOHCH CH.CCH (D) Seleet from A to D the compound that could Give a positive iodoform test 19. The number of moles of silver that would he 0.c6dn3 27. (A) 00ll precipitated is 02 Md (C) (D) 0.20 x 50.0 S 1000 (A) 0.20 x 50.0 18 28. Exhibit geometric isomerism 020x500 020x50 (D) 1000x2 (C) (D) (B) React with phenol to give a coloured (C) AT 29. What would be the temperature rise if 25.0 cm of 0.20mol dm of silver nitrate vere used in 20. compound. (D) (B) C) Haye optical isomers (C) React with ammoniacal Copper ti) chloride lo form a red-brown precipitate. (C) A) the experiment? 2 e 6 S 30. 2 2°C (BT4 4C(C) 8.8°C (D) 17.6°C The enthalpy change AlH (in kInol y for the reaction given the specifie heat capacity of the solution as 4.2JcmC- is expressed as (A) (A) (D) 21. 31 (A) (B) Questions 32and 33 concem on the following graphs 50.0x4.2XRB (A1-50.0 x 4.2 x 8.8 SO OND 20 IC) +50.0 x 4,2 x 8.8 (D) 50.0-0.20 On licating, 131g of calcium carbonate gave 22. 0.69g of calcium bxide, CaO. (Ca=40, C=12, O=16) CaCOs) CaOs) + CO 8) The percenlage yield for this reaction is TA! 567 D1 106 46 Qrestions 23-26 concern I moldm solutions of A) Lthanoie acid (B) Sodium hydroxide (CJAmimonia Select from A to D the substance, which has the properny indicated 23. 94 52 (C) 56.00 (D)Hydrochloric acid The solution that has the lowest pFl value (C) ) The solution which when added to coppert il) sulphate gives a pale-blue precipitate. When excess of the solution is added to the precipitate, a deep blue solution results (D) T. nlutire urhich contains the least (A) (B) Select from A to D the graph that Could be the variation of the concentration of a reactant with time as the reaction proceeds 24. 32. (B) Could represent the variation of pressure with volume for a given nass of gas at constant (C) (D) (A) (B) ses 33. Tuniber ol hydrogen ons (B) (C) (D) The solution that is a Lewis base (B) 26. 34. In the reaction.